body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
    color: #47763b;
    text-align: center;
}

h1 {
    font-size: 3rem;
    margin: 0;
}

h3 {
    font-size: 1.2rem;
    margin: 10px;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 0.9rem;
    }
    
    body {
        padding: 10px;
    }
}